727 Big Bore Kit
Fits: Raptor 660 01-05, Grizzly 660 02-07, Rhino 660 05-07
+5mm (105mm) big bore kit, includes PRO Series JE Pistons complete piston kit, a big bore Sleeve and a Cometic top-end gasket kit.
NOTE: This kit requires your stock cylinder to be sleeved, finish bored and honed AND your engine cases bored. If you’d like us to do that work, just contact us.